OF LOWElt GREENSAND PLANTS. 



207 



u abietinean pitting," but I can detect no signs of it. In radial 

 section in Ibe lateral walls there are small circular or oval pits, 

 from 1-6 per tracheid-field, which are very delicately bordered. 

 In some cases it is difficult to detect the borders, but in a 

 number of cases I have been able to recognise clear round 

 borders (text-fig. 59, w/.), so that it is probable that these ray- 



-rr. 



Text-fig. o9. Taxoxylon anylicum, sp. nov. Radial section showing two 

 rays connected by very short irregular tracheids. st. p., bordered pits 

 of tracheids between which are seen Sanio's rims. Small groups of 

 bordered pits, mi., lie in each tracheid-field of the rays, n., the 

 extremely fine spiral thickening of the tracheids. No. V. 5459 c. 



elements represent more or less well-developed ray-tracheids. 

 In some of the other cells of the rays large simple pits, one to 

 each tracheid-field, can be seen, but I cannot feel sure that 



